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Democritus_Per1's avatar
Democritus_Per1
Icon for Nimbostratus rankNimbostratus
Jul 12, 2012

hash persistence on an irule manipulating ICAP headers

Hello all,     I have a Virtual server managing ICAP traffic and I need to set up hash persistence profile using an irule that it would examine the ICAP header .     I found some reference...
application delivery
dev
devops
iRules
nitass's avatar
nitass
Icon for Employee rankEmployee
Jul 12, 2012
i am not much familiar with icap. anyway, i think it looks okay to me.

this is my testing. 

[root@ve10:Active] config  b virtual bar list
virtual bar {
   snat automap
   pool foo
   destination 172.28.19.79:80
   ip protocol 6
   rules myrule
   profiles {
      http {}
      tcp {}
   }
}
[root@ve10:Active] config  b pool foo list
pool foo {
   members 200.200.200.101:80 {}
}
[root@ve10:Active] config  b rule myrule list
rule myrule {
   when HTTP_REQUEST {
   log local0. "\[HTTP::header X-SESSION_ID\]: [HTTP::header X-SESSION_ID]"
   persist hash [HTTP::header X-SESSION_ID]
}
}

[root@ve10:Active] config  ssldump -Aed -nni 0.0 port 80
New TCP connection 1: 172.28.19.251(37119) <-> 172.28.19.79(80)
1342082781.0825 (0.0017)  C>S
---------------------------------------------------------------
REQMOD icap://172.28.19.79/echo ICAP/1.0
Host: 172.28.19.79
User-Agent: C-ICAP-Client-Library/0.01
X-SESSION_ID: 10.20.44.245:1340175464
Encapsulated: req-hdr=0, null-body=91

---------------------------------------------------------------

1342082781.0825 (0.0000)  C>S
---------------------------------------------------------------
GET /something HTTP/1.0
Date: Thu Jul 12 16:49:06 2012
User-Agent: C-ICAP-Client/x.xx

---------------------------------------------------------------

[root@ve10:Active] config  b persist show all
PERSISTENT CONNECTIONS
|     Mode hash   Value 2790347781
|        virtual 172.28.19.79:80   node 200.200.200.101:80   age 19sec

[root@ve10:Active] config  tail /var/log/ltm
Jul 12 16:46:21 local/tmm info tmm[5111]: Rule myrule : [HTTP::header X-SESSION_ID]: 10.20.44.245:1340175464